Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Net loss	$ (117,078)	$ (57,418)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	7,746	3,020
Loss on disposal of property and equipment	882	0
Provision for bad debt and valuation allowance	805	1,299
Gain on loan sales	(14,982)	(6,169)
Equity-based compensation expense	3,989	421
Amortization and write-off of debt issuance costs	1,407	0
Originations of finance receivables	(361,265)	(160,713)
Proceeds from sale of finance receivables	361,659	228,480
Proceeds from sale of finance receivables to related party	0	1,531
Purchase of finance receivables from related party	0	(74,589)
Changes in assets and liabilities:
Accounts receivable	(6,159)	(1,509)
Prepayment to related parties	0	(1,404)
Vehicle inventory	(5,962)	(62,335)
Other current assets	(1,206)	(3,449)
Other assets	(1,722)	0
Accounts payable and accrued liabilities	8,694	9,493
Accounts payable to related party	258	(21,436)
Other liabilities	6,920	0
Net cash used in operating activities	(116,014)	(144,778)
Cash Flows from Investing Activities:
Purchases of property and equipment	(59,408)	(21,021)
Change in restricted cash	(1,489)	(2,299)
Net cash used in investing activities	(60,897)	(23,320)
Cash Flows from Financing Activities:
Proceeds from floor plan facility	674,411	246,880
Payments on floor plan facility	(644,641)	(200,870)
Proceeds from Verde Credit Facility	35,000	0
Payments on Verde Credit Facility	(35,000)	0
Proceeds from long-term debt	7,596	0
Payments on long-term debt	(1,137)	(107)
Payments of debt issuance costs, including $1,000 and $0 to related parties, respectively	(1,000)	(228)
Proceeds from exercise of stock options	28	0
Tax withholdings related to restricted stock awards	(399)	0
Net proceeds from initial public offering	206,323	0
Net cash provided by financing activities	241,181	205,318
Net increase in cash and cash equivalents	64,270	37,220
Cash and cash equivalents at beginning of period	39,184	43,134
Cash and cash equivalents at end of period	103,454	80,354
Supplemental cash flow information:
Cash payments for interest to third parties	4,668	1,844
Cash payments for interest to related parties	382	30
Non-cash investing and financing activities:
Capital expenditures included in accounts payable and accrued liabilities	11,006	3,284
Capital expenditures financed through long-term debt	7,988	2,328
Accrual of return on Class C redeemable preferred units	9,439	13,224
Conversion of Class C redeemable preferred units to Class A units	260,411	0
Class C Redeemable Preferred Units
Cash Flows from Financing Activities:
Proceeds from issuance of Class C redeemable preferred units	0	159,725
Class C redeemable preferred units issuance costs	$ 0	$ (82)